Abstract:
BACKGROUND AND PURPOSE:Bradykinesia, which is commonly defined as slowness of movements, is one of the cardinal signs of Parkinson's disease (PD) and parkinsonian syndromes. Simple clinical rating scales are used commonly to measure bradykinesia in routine clinical practice although this kind of assessment is biased. The aim of the study was to evaluate the time of spiral drawing as a measure of bradykinesia. MATERIAL AND METHODS:Fifty-four patients with PD and 39 healthy age- and sex-matched volunteers were examined. The severity of parkinsonism was assessed using UPDRS and bradykinesia was assessed using instrumental methods: the BRAIN test, Nine-Hole Peg Board (NHPB) test and Quantitative Tremor Analysis on the Graphic Digitizing Tablet (QTAGDT). QTAGDT registers patients' hand movements during the spiral drawing task and generates several data characterizing tremor and the spiral drawing time as an additional result. RESULTS:The spiral drawing time was significantly longer in PD patients when compared to normal controls (p <0.001). The bradykinesia assessment using the spiral drawing time showed a significant correlation with the clinical rating score of the UPDRS (R = 0.64, p = 0.001) and with the results of other instrumental methods: the BRAIN Test and NHPB test (R = -0.52, p = 0.0007, R = 0.55, p = 0.03, respectively). Hand tremor seemed to have no impact on bradykinesia assessment, and the new method was found to be highly test-retest reliable (R = 0.95, p < 0.0001). CONCLUSION:The spiral drawing time is a simple, quick and objective assessment of upper limb bradykinesia.
journal_name
Neurol Neurochir Poljournal_title
Neurologia i neurochirurgia polskaauthors
Banaszkiewicz K,Rudzińska M,Bukowczan S,Izworski A,Szczudlik Asubject
Has Abstractpub_date
2009-01-01 00:00:00pages
16-21issue
1eissn
0028-3843issn
1897-4260pii
12138journal_volume
43pub_type
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journal_title:Neurologia i neurochirurgia polska
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